Switch glibc to generating `.abilist` files from built ELF files

[alexrp]

As for all the other libcs we support.

There are a few reasons why we should do this:

• We might be able to get rid of this workaround.
• We will be able to know which symbols are weak; this information is just completely missing at the moment.
• We will be able to deal with symbols that have compatibility version entries but shouldn't be linkable in newer versions ([zig cc] unexpected feature test success for pthread_kill_other_threads_np zig#24241).